Warp stop-motion.



H. KOCH & J. J. MU'LLER.

WARP STOP MOTION.

APPLICATION FILED FEB.7, 1912.

1 3082,4128. Patented Dec. 23, 1913.

2 SHEETS-SHEET 1.

COLUMBIA PLANOGRAPN C0.,WA5|HNGTON. 1). c

H. KOCH & J. J. MU'LLER.

WARP STOP MOTION.

APPLICATION FILED rmm, 1912.

Patented Dec. 23, 1913.

2 SHEBTSSHEET 2.

COLUMBIA PLANOORAPN CO., WASHINGTON D. c.

lllNlT STATES ATFllhl HANS KOCH AND JOI-IANN JAKOB IlIlLl'LLER, 0FDIETIEION, SYVITZERLAND.

WAR-P STOP-MOTION.

oseass.

To all whom it may concern:

Be it known that we, HANs KOCH and JoI-iANN JAKOB MI'iLLER, bothcitizens of the Republic of Switzerland, and residents of Diet-ikon, inthe Canton of Zurich, Switzerland, have invented new and usefulImprovements in Warp Stopl lotions, of which the "following is aspecification.

The object of our invention is the providing of a stopper, designed toautomatically throw out of gear the weavers loom in case of warpbreaking.

@ur improved mechanism differs from those of the general type in so farthat the broken warp-threads may be caught not only on one lineextending transversely to the warp-threads, but are blown by means of anozzle provided at the end of a tube, oscillating in a transversedirection to that of the warp, into a space limited in extent, withinwhich are provided stopper lamellre made to move against and alternatelyengage with each other, commanding in their stroke the entire space, ofwhich the one are movable and are caused by the broken warpthreads,which introduce themselves be tween the stopper lainellze, to deflect insuch a manner that, by the mere resistance offered by the broken thread,the mechanism stopping the loom will be acted upon.

in the accompanying drawing, which forms part of this specification, anembodiment of our invention is shown by way of example and applied to aloom of which only those parts are diagrammatically shown which arenecessary for the understanding of our resent invention.

Figure l is a vertical section of the mechanism about the line AB ofFig. 3; Fig. 1 is a horizontal section through two stepper-lamellre;Fig. 2 is a top plan view of Fig. 1; Fig. 3 is a section about CD ofFig. 1 and Figs. 4, 5 and 6 are details of the air supply system.

Referring to parts on drawing: 1 is the warp or the warp-threads whichrun from a warp-beam 1 over a straightening beam 3 through the mounting2, and through the reed of the lathe 31 of the loom to reach theSpecification of Letters Patent.

Application filed February 7, 1912.

Patented 23, T2913.

Serial No. 676,025.

cloth-beam 1. Between two leases 2 are arranged and set apart from each.other, two horizontal bars 10, extending in the same direction as theformer, and running parallel to each other, over which are guided thewarp-threads 1. Upon two horizontal bars *3, arranged transversely tothe di ction of the warp-threads and permanently secured in place belowthe latter, are fitted and kept apart from each other by cans of thetube pieces 8 the vertical and stat" K stopper lamellze 5) extending inthe sa 1e directicn as the warp-threads, and pro ecting with their upperpart upward between the warp-threads. The stopper lamelleo 9 whichpreferably are stamped out i sheet iron, are fitted, below thewarp-threads, with downwardly extending vertical teeth 9. Through theteeth 9 the stationary stopper lamellce 9 and positioned in the sameline, wires -;-t are passed which run transversely to the warp-threads,as shown in Figs. 1, 1 2 and 3, so that the broken warpthreads will.come to rest transversely on the same, thereby crossing the teeth or thetwo rows of stopper lainellzr. Underneath the stopper lainellai 0 arearranged parallel two supporting rails 12', interconnected at eachextremity by a trareling carriage rf he two traveling carriages l) areadapted to be shifted to and fro on two horirzontal bars 13 secured withboth of their ends to the frame or the loom, the carriages thustraveling transversely to the longitudinal direction of thewarp-threads. The traveling carriage 12 which is shown at the left handside of Fig. l is associated by means of connecting red A with the crank14% opera tively connected by means of bevel. gear system with cam shaft16 the lco u, so that, while wcrl-iing operations are on, the rails 19are continuously shifted to and tro, and this to a somewhat greater entthan the distance between two stopper laznellze 9. Between the rails 12are ably mounted on two horizontal jo each many stopp .ianiellre l? Ltee-re are stopper lamellte 9. stepper lamellae 17, which are likewisestamped out of sheet iron, are provided with teeth which so fit into thespaces between the teeth of the stopper lamellae 9, that they will notcontact with the teeth 9 when the stopper lamellze 17 are caused by therails 12 to move past the stopper lamellze 9.

In order to insure that the stopper lamellae 17 are constantlymaintained in a vertical position, they are mounted so as to projectdownward beyond their journals with the result that the center ofgravity of the stopper lamellze 17 is located below their axis ofrotation. The path of travel of the stopper lamellae 17 is so arrangedthat in each run two adjacent stopper lamellze 9 are passed by. (Fig. 1to the right). YVithin the one rail 12',the stopper lamellae 17 are eachprovided, and made all in one piece, with a double armed lever 18. Overall these levers 18 runs a wire 19, connected at its ends to two levers21 which, overlapping one of the supporting rails 12, are rotatablymounted on a common shaft 20 lodged in two arms 5 of the supportingrails. To one end of the shaft 20 is secured a downwardly projectinglever 22, the lower end of which is connected by means of a cord to thelower end of lever 26. As is evident from Fig. 3, the lever 26 willnormally occupy a backwardly oblique posi tion, so that the cord iscontinuously subjected to a slight tension seeing that lever 26 alwaystends to move into a. vertical position. The lever 26 carries at itsupper end, and projecting toward the lathe 31, a tongue 30, which at therear end on 26, has a shoulder 30. On the rear end of tongue 30,normally rests with its free end a catch 34, which will catch behind thesaid shoulder 30 as soon as the lever 26 is brought into the positionshown by dotted lines in Fig. 3 and in this position lever 26 isdebarred from being automatically restored into its former position. Tothe lathe 31 is fitted an abutment 32 which, while the loom is inregular working operations, is moving below the tongue 30, but same willstrike against the latter whenever lever 26 occupies the position whichis shown by dotted lines in Fig. 3. The lever 26, as well as the catch34 are both bedded in the checks 27 of the stopping mechanism of theloom. 33 is the shipper lever of the loom which is connected to the beltguide 36 of the drive, the latter being constituted by a loose pulley 57and a tight pulley 58. On the abutment 32 striking against the tongue30, the checks 2? will draw back and thereby the drive of the loom isthrown out of gear in the usual manner.

Located transversely to the position of the warp, and arranged over andabove the loom, there is a compressed air supply piping 37 to which isconnected the valve chamber 38.

From a flanged socket 39 standing forward off from same (Figs. 3 and 4to the left) a tube 40 is suspended, having at its lower end locatedimmediately over the warp, a nozzle and which in the form of a pendulumfreely oscillates transversely over the warp. The action of the saidtube, or rather the imparting of the oscillating movement to it may, asis shown by plain lines in Fig. 1, be commanded from the cam shaft 16.The tube 40, by means of a rod 41, is connected to a lever 42 which isput into oscillation by a shaft 43, lodged in a forked support 44secured to the compressed air supply piping 37 and which carries betweenthe supporting arms a coupling (Fig. 6), constituted by two disks 45, 46and a spiral spring 47.

The one coupling member, carrying on a downwardly projecting arm thelever 42, is provided with four gudgeons which nor mally are projectingin hollowed depressions of the other coupling member whereby it isobtained that whenever a resisting force is brought to act upon thetube, such as is for instance the case when the tube is seized with thehand, the coupling will be thrown out of engagement, thus any risk ofinjury being done to the hands by the tube striking against them isavoided, and the warp can be completely disengaged at the upper part. Atthe forward rigl'it hand end of the shaft 43 (Fig. 6), lever 50 ispermanently secured in place, which by its free end, and by means of arod 48 is operatively connected to a crank 49, fitted to the cam shaft16, and which, while the loom is in working operation, is caused toswing constantly up and down. From a clownwardly extending flangedsocket of the valve chamber, projects a valve-spindle 51 (Fig. 5) whichwith its lower end bears upon a nose 52 of lever 53 seated in a wing ofthe valve chamber. Said lever is loaded by a weight so that itconstantly tends to occupy its lowermost position (Fig. which latter islimited by an arm 54, projecting upward beyond the fulcrum of lever 53and bearing with its upper end on the valve chamber. In this position ofthe levers 53, 54, the valve-spindle 51 is depressed and the valve isclosed. The arm 54 is connected by means of a wire 55 to one of the armsof a double armed horizontally oscillating lever 56 seated in the loomwhich, with its other arm applies in such a way against the belt guide36 that on starting the loom, the lever 56 is so rotated that arm 54 iscaused to swing downward and lever 53 upward. Thereby the valve-spindleis raised and the valve opens.

The action of the herein described mecha nism is as follows: As soon asa warp-thread breaks, the air blowing from the oscillating tube 40 willcarry the broken thread clownward between the bars 10 or the two ends ofthe thread will be blown altogether downward into the space limited bythe wires 4 and the stopper lamellae, as is shown in Fig. 3. Hereby thebroken thread is sure to be caught between two stopper lamellae 9 and 17with the result, that the respective stopper lamella 17 is brought intoan oblique position. The consequence is that lever 18 of the respectivestopper lamella is likewise caused to take an oblique position, therebylifting up the wire 19. This causes the shaft 20 or rather the lever 22to rotate, so that lever 26 is made to occupy a position correspondingto its condition of equilibrium thus bringing the tongue 30 within reachof the abutment 82. The latter will strike on the next following forwardstroke of the lathe against the tongue 30 and bring about the stoppingof the loo-m.

What we claim as new and desire to secure by Letters Patent of theUnited States is:

1. In a warp stop motion for looms, the combination of a tubularpendulum forming a nozzle for the distribution of compressed air, meansfor oscillating said pendulum transversely over the warp, two series ofstopper lamellze one stationary and the other movable below said warpadapted to catch the ends of a broken thread blown toward them by theair distributed by said nozzles, levers connected to said stopperlamellae participating in their movement, and means controlled by saidlevers for actuating the stopping mechanism of the loom.

2. In a warp stop motion for looms, the combination of a tubularpendulum forming a nozzle for the distribution of compressed air, meansfor oscillating said pendulum transversely over the warp, stopperlamellae provided within a space below the warp, arranged in twosuperposed horizontal rows transversely to the direction of the warp,means for oscillating the lower horizontal row or" stopper lamellae,teeth upon the stopper lamellze of each row crossing each other forcatching the ends of a broken thread blown toward them by the airdistributed from said nozzle, means connected to said lamellze forparticipating in their movement, and means controlled by said last namedmeans for actuating the stopping mechanism of the loom.

3. In a warp stop motion for looms, the combination of a tubularpendulum forming a nozzle for the distribution of compressed air, meansfor oscillating said pendulum transversely over the warp, a series ofstationary, and a series of movable stopper lamellae, two parallelconnected rails carrying the movable lamellae, a drive for reciprocatingthe movable lamellae to a somewhat greater extent than the distancebetween two stationary lanlellze for entangling the ends of the brokenwarp thread, and means controlled by said lamellae tor actuating thestopping mechanism of the loom.

a. In a warp stop motion for looms, the combination of a tubularpendulum forming a nozzle for the distribution of compressed air, meansfor oscillating said pendulum transversely over the warp, stopperlamellze provided within a space below the warp, one series of which ismovably mounted to permit free oscillation, means for reciprocating oneseries of lamellae, a wire passed through the teeth of the staionarylamellae, levers to which the ends of said wire are connected, a shaftfor said levers, a downwardly projecting lever secured to one end ofsaid shaft, a lever connected by a cord to the lower end of saiddownwardly projecting lever, means for connecting said first-named leverwith the stopping mechanism of the loom, a lathe, an abutment on saidlathe for causing the actuation of the stopping mechanism of the loomupon the breaking of a thread.

5. In a warp stop motion for looms, the combination of a tubularpendulum forming a nozzle for the distribution of compressed air, meansfor oscillating said pendulum transversely over the warp, stationary andoscillating stopper lamellae pro vided within a space below the warp andarranged in two superposed horizontal rows running transversely to thedirection of the warp threads, the lamellze standing upright andextending in the same direction as the warp threads, means forreciprocating one row of the lamellae, teeth so provided on the stopperlamellae that on reciprocating one row of said lamellae transversely tothe warp the teeth of this row are formed to penetrate and pass throughthe spaces between the teeth of the other row of lamellze, wires whichpass through the stationary lamellze limiting said space and offering asupport for the broken warp thread resting in a transverse position uponthe same, a lever and a shaft connected to said lamellae adapted to berotated upon the deflection of the same, and means for actuating thestopping mechanism of the loom.

6. \Varp stop motion for looms comprising a pendulum tube, means foroscillating said tube transversely over the warp, a nozzle at the end ofsaid tube for supplying compressed air, a coupling operativelyconnecting said tube with the drive of the loom, spring pressed catchesprovided at one of the coupling members engaging depressions in theother coupling member for throwing the coupling automatically out ofengagement, the moment the tube is stopped and prevented fromoscillation, substantially as described.

7. Warp stop motion'for weavers looms the valve upon the stopping of theloom, 10 comprising a tube for supplying compressed substantially asdescribed.

air, means for oscillating said tube trans- Signed by us at Zurich,Switzerland, this versely over the warp, a nozzle at the lower third dayof January, 1911.

end of said tube, a valve between said tube HANS KOCH.

and the source of compressed air opening JUHANN JAKOB MULLER.automatically on starting the loom, a con- Witnesses:

nection for connecting said valve with the Hnmnron RINDERKNEGHT,

stop mechanism of the loom adapted to close HARRY A. MCBRIDE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

- Washington, D. C.

